In addition to the projector and power cord, the SU931 comes with a VGA cable and its remote control with two AA batteries. There’s also a Quick Start guide and a CD that has the projector’s 74-page manual on it.
The most prominent part of the SU931 is the projector’s large chrome-plated lens barrel. It’s offset to the right from the front and the actual optics are safely recessed inside. There are well-marked focus and zoom rings at the end that are a little too close together for my taste, but you can’t adjust them from the remote control. Happily, the SU931 comes with a lens cap, something that’s becoming increasingly rare these days.
In addition to three adjustable feet, the projector has four attachment points underneath for mounting hardware. It works with generic equipment but BenQ has an inexpensive ceiling kit available.
It’s not for projecting in tight spots, though. That’s because the SU931 requires 20-inches of clearance on all sides to keep cooling air flowing. It can’t be set up at an angle of more than 10-degrees left-to-right or 15-degrees front-to-back, limiting its appeal.
The SU931’s control panel is simple and functional with a large on/off button and three-by-three square of keys. They control everything from entering and exiting the Menu to selecting the source and blanking the screen. There are dedicated buttons for adjusting the horizontal and vertical keystone correction, which should streamline its setup.
Despite its small size, the SU931's control panel is simple, straight-forward and easy to figure out.
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In the back of the projector is an extensive connection panel that is recessed so it can be hard to see inside in the dark; my advice is to have a flashlight handy. All the connections are well marked and color coded and you won’t suffer the indignity of having hot exhaust air blow on you while trying to plug in a source.
In addition to a pair of HDMI ports, one of which can be connected to an MHL-ready phone or tablet, the SU931 has connections for Composite, Component, VGA and S-Video. About the only thing the projector lacks is a DisplayPort connection.
The SU931's connectors are inset quite a bit from the back of the projector.
There’re several jacks for input and output audio, including a microphone input. The projector has both Type A and B USB connections in the back, but the SU931 can’t directly display material on a USB thumb drive.
If your room has a remotely controlled screen, the SU931 can send out 12-volts of electricity to power it open or close. Finally, the SU931 provides the choice of an RS-232 and a RJ-45 Ethernet port for controlling the projector remotely. Connecting wirelessly to a facility’s WiFi network is neither included nor an option with the SU931.
On the downside, BenQ doesn’t include a way to lock the AC cable in place or offer a cover to hide the warren of wires for a projector that will be in plain view.
Over the course of two weeks of daily use, the SU931 worked with a variety of source material, from spreadsheets and presentations to videos and Web sites. I used a Microsoft Surface 3, a Macbook Air, iPad Pro and a Pioneer DVD player. I also used a Geffen 8X8 HD switcher and a StarTech HDMI Pattern Generator to project sample images.